Senior Power Electronics Reliability Engineer (Equity)

Lunar Energy, Inc.; Mountain View, Northern (CA, KY); Hybrid; USD 150,000 - 178,000; Full time

Benefits offered by this job

Medical, dental & vision insurance

401(k) plan with tax advantages

Parental leave

EV charging subsidy

Job summary

Lunar Energy, Inc. in Mountain View, CA, is hiring a Senior Reliability Engineer - Power Electronics to ensure product reliability across the lifecycle, from design input to field performance.

You will lead DFMEA, ALT testing, and reliability planning for power electronics and battery systems in a fast-growing home energy company. Collaborating with mechanical and electrical engineers, you will monitor field reliability metrics, drive root-cause analysis, and contribute to a culture of

Qualifications

• Degree in Mechanical Engineering, Electrical Engineering, Chemical Engineering, Physics or equivalent.
• Proven track record of solving complex power electronics reliability failures.
• Working knowledge of theory of operation of common power converter topologies (inverter, buck boost converter, etc.).
• Strong grasp of PCBA-level failure physics (CTE mismatch, solder fatigue, contact resistance, insulation degradation).
• Familiarity with failure modes in common power electronics components (electrolytic caps, relays, semiconductors, magnetics).
• Working knowledge of failure analysis techniques such as optical microscopy, SEM, CSAM, X-ray, cross-sectioning and EDX.
• Experience with accelerated life testing models and the governing equations, specifically for PCBA, battery storage, and relevant mechanical structures.
• Understanding of reliability statistics.

Responsibilities

• Collaborate with mechanical and electrical engineers during hardware design to establish and refine component and system level reliability targets for our power electronics and battery systems.
• Provide Design for Reliability (DfR) inputs during new product development.
• Drive Design Failure Modes and Effects Analyses (DFMEA) for various systems to capture performance risks and implement appropriate mitigation activities.
• Develop ALT Reliability Test Plans for components and subsystems using identified risks, reliability targets, and physics of failures methodology to demonstrate the required product reliability throughout its design life.
• Track field reliability performance for various metrics like part replacements, customer complaints, fault codes. Identify opportunities for continuous product improvement and reliability growth.
• Drive failure analysis of reliability test and/or field returns to determine root cause and drive product improvement through containment and corrective actions.

Skills

Power electronics

Reliability

DFMEA

ALT testing

Field data

Root-cause analysis

Education

Mechanical Engineering

Electrical Engineering

Chemical Engineering

Physics

Tools

Optical microscopy

SEM

CSAM

X-ray

Cross-sectioning

EDX

Job description

Lunar Energy, Inc. in Mountain View, CA, is hiring a Senior Reliability Engineer - Power Electronics to ensure product reliability across the lifecycle, from design input to field performance.

You will lead DFMEA, ALT testing, and reliability planning for power electronics and battery systems in a fast-growing home energy company. Collaborating with mechanical and electrical engineers, you will monitor field reliability metrics, drive root-cause analysis, and contribute to a culture of